Nose wheel subsystem is the important part of aircraft landing gear system. Based on analysis and research upon the steering subsystem of the nose landing gear, by applying the hydraulic simulation software DSHplus, the model of the nose wheel subsystem is built and the simulation is carried out. The results are consistent with that of the ground experiments, which verify the model. In addition this method contributes to enhance the reliability of the whole system in the initial stage, thus reducing the cost of the design and making the product more competitive.